brake fluid INFINITI FX35 2008 Service Manual

ACS-8
< SERVICE INFORMATION >[ICC]
DESCRIPTION
DATA MONITOR INPUT ITEM LIST
DATA MONITOR OUTPUT ITEM LIST
InputData monitored
Item [unit] CAN Description
ECM THRTL OPENING
[%]
×Indicates throttle angle read by ICC unit through CAN communication (ECM transmits
throttle angle through CAN communication).
ENGINE RPM
[rpm] ×
Indicates engine speed read by ICC unit through CAN communication (ECM transmits
engine speed through CAN communication).
MAIN SW
[On/Off] ×Indicates [On/Off] status as judged from steering switch signal (ECM transmits steering
switch signal through CAN communication).
SET/COAST SW
[On/Off] ×Indicates [On/Off] status as judged from steering switch signal (ECM transmits steering
switch signal through CAN communication).
CANCEL SW
[On/Off] ×
Indicates [On/Off] status as judged from steering switch signal (ECM transmits steering
switch signal through CAN communication).
RESUME/ACC SW
[On/Off] ×Indicates [On/Off] status as judged from steering switch signal (ECM transmits steering
switch signal through CAN communication).
IDLE SW
[On/Off] ×Indicates [On/Off] status of idle switch read by ICC unit through CAN communication
(ECM transmits ON/OFF status through CAN communication).
TCM VHCL SPD AT
[km/h] or [mph]
×Indicates vehicle speed calculated from AT vehicle speed sensor by ICC unit through
CAN communication (TCM transmits AT vehicle speed sensor signal through CAN com-
munication).
GEAR
[1, 2, 3, 4, 5] ×Indicates AT gear position read by ICC unit through CAN communication (TCM transmits
gear position through CAN communication).
D RANGE SW
[On/Off] ×
Indicates [On/Off] status of “D” position read by ICC unit through CAN communication
(TCM transmits ON/OFF condition of “D” position through CAN communication).
NP RANGE SW
[On/Off] ×Indicates PNP switch signal read by ICC unit through CAN communication (TCM trans-
mits PNP switch signal through CAN communication).
ABS actuator
and electric
unit (control
unit) VHCL SPEED SE
[km/h] or [mph]
×Indicates vehicle speed calculated from wheel sensor by ICC unit through CAN commu-
nication (ABS actuator and electr
ic unit (control unit) transmits wheel speed sensor signal
through CAN communication).
BCM WIPER SW
[Off/Low/High]
×Indicates wiper [Off/Low/High] status (BCM transmits front wiper request signal through
CAN commun
ication).
Brake pres-
sure sensor PRESS SENS
[bar]
Indicates brake fluid pressure value calculated from signal voltage of pressure sensor.
Release
switch RELEASE SW NO
[On/Off]
Indicates [On/Off] status as judged from release switch signal.
ON when brake is depressed.
OFF when brake is not depressed.
RELEASE SW NC
[On/Off] Indicates [On/Off] status as judged from release switch signal.
ON when brake is not depressed.
OFF when brake is depressed.
ICC brake
switch BRAKE SW
[On/Off]
Indicates [On/Off] status as judged from ICC brake switch signal.
Sto p l am p
switchSTOP LAMP SW
[On/Off]
Indicates [On/Off] status as judged from stop lamp switch signal.
Output Data monitored
Item [unit] CAN Description
ICC warning
chime BUZZER O/P
[On/Off]
×
Indicates [On/Off] status of ICC warning chime output.
ICC brake hold
relay STP LMP DRIVE
[On/Off]
Indicates [On/Off] status of brake hold relay drive output.
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DESCRIPTIONACS-9
< SERVICE INFORMATION > [ICC]
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ACTIVE TEST ITEM LIST
Component DescriptionINFOID:0000000001328807
CAN CommunicationINFOID:0000000001328808
CAN (Controller Area Network) is a serial communication li ne for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tric control units are equipped onto a vehicle, and eac h control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN COMMUNICATION UNIT
Refer to LAN-43, "CAN System Specification Chart".
Output CONSULT-III ICC
[ACTIVE TEST]
Item CAN Description
Combination
meter ICC BUZZER 1
×Able to start ICC warning chime with a driving signal from ICC unit.
METER LAMP ×Able to turn ICC system display ON with a driving signal from ICC unit.
ICC brake hold
relay STOP LAMP Able to start ICC brake hold relay with a driving signal from ICC unit.
Booster sole-
noid BOOSTER SOL/V
3
Able to start booster solenoid with a driving signal from ICC unit.
ComponentVehicle-to-
vehicle
distance
control mode Conventional
(fixed speed)
cruise
control mode Brake assis
(with preview function) Description
ICC unit ××× Operates electric throttle control actuator and brake
booster based on that sensor signals and CAN commu-
nication data, then controls vehicle distance.
ICC sensor ×× Irradiates laser beam, and receives reflected laser beam
to measure distance from preceding vehicle.
ECM ××× Transmits throttle position signal and ICC steering switch
signal to ICC unit through CAN communication.
ABS actuator and electric
unit (control unit) ××× Transmits wheel speed sensor signal to ICC unit through
CAN communication.
Brake pressure sensor ×× Detects fluid pressure in master cylinder.
Brake booster ×× Adjusts brake fluid pressure, based on command from
ICC unit.
BCM × Transmit front wiper request signal to ICC unit through
CAN communication.
TCM ×× Transmits gear position signal and output shaft revolu-
tion signal to ICC unit through CAN communication.
Unified meter and A/C amp. ××× Receives ICC system display signal, ICC warning lamp
signal and buzzer output signal from ICC unit through
CAN communication.
ICC brake switch, stop lamp
switch ××× Transmit operating signal to ICC unit when touching
brake pedal. ICC unit cancels cruise system at driver's
brake operation.
ICC brake hold relay × Receives stop lamp driving signal from ICC unit, and
turns stop lamp ON.
Parking brake switch ×× The cruise system is cancelled when applied.
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TROUBLE DIAGNOSIS — GENERAL DESCRIPTIONACS-31
< SERVICE INFORMATION > [ICC]
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ENGINE RPM
[rpm] ×× Indicates engine speed read from ICC unit through CAN commu-
nication (ECM transmits engine speed through CAN communica-
tion).
DISTANCE ADJ
[ShortMid/Long] ×××
Indicates set distance memorized in ICC unit.
WIPER SW
[Off/Low/High] ××
Indicates wiper [OFF/LOW/HIGH] status (BCM transmits front
wiper request signal through CAN communication).
MAIN SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
SET/COAST SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
CANCEL SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
RESUME/ACC SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
CRUISE OPE
[On/Off] ××
Indicates whether controlling or not (On means “controlling”).
BRAKE SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC brake switch signal.
STOP LAMP SW
[On/Off] ××× Indicates [On/Off] status as judged from stop lamp switch signal.
RELEASE SW NO
[On/Off] ×× Indicates [On/Off] status as judged from release switch signal.
ON when brake is depressed.
OFF when brake is not depressed.
RELEASE SW NC
[On/Off] ×× Indicates [On/Off] status as judged from release switch signal.
ON when brake is not depressed.
OFF when brake is depressed.
IDLE SW
[On/Off] ×× Indicates [On/Off] status of idle switch read from ICC unit through
CAN communication (ECM
transmits On/Off status through CAN
communication).
GEAR
[1, 2, 3, 4, 5] ×× Indicates AT gear position read from ICC unit through CAN com-
munication (TCM transmits gear position through CAN commu-
nication).
BUZZER O/P
[On/Off] ×
Indicates [On/Off] status of ICC warning chime output.
ICC WARNING ×NOTE:
This item is displayed, but cannot monitor.
VHCL SPD AT
[km/h] or [mph] ×Indicates vehicle speed calculated from AT vehicle speed sensor
read from ICC unit through CAN communication (TCM transmits
AT vehicle speed sensor signal through CAN communication).
PRESS SENS
[bar] ××× Indicates brake fluid pressure value calculated from signal volt-
age of pressure sensor.
PRESS SENS 2 ×× NOTE:
This item is displayed, but cannot monitor.
D RANGE SW
[On/Off] ×× Indicates [On/Off] status of “D” position read from ICC unit
through CAN communication (TCM transmits On/Off condition of
“D” position through CAN communication).
A/T OD OFF
[On/Off] ×
Indicates [On/Off] status of OD cancel output under control.
Monitored Item [unit]
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM
MENU Description
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AT-1
TRANSMISSION/TRANSAXLE
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CONTENTS
AUTOMATIC TRANSMISSION
SERVICE INFORMATION .. ..........................5
INDEX FOR DTC ............................................ .....5
Alphabetical Index ............................................... ......5
DTC No. Index ..........................................................5
PRECAUTIONS ...................................................7
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
7
Precaution for On Board Diagnosis (OBD) System
of A/T and Engine .....................................................
7
Precaution .................................................................7
Service Notice or Precaution .....................................8
PREPARATION ...................................................9
Special Service Tool ........................................... ......9
Commercial Service Tool ..........................................9
A/T FLUID ...........................................................11
Changing A/T Fluid ............................................. ....11
Checking A/T Fluid ..................................................11
A/T Fluid Cooler Cleaning .......................................13
A/T CONTROL SYSTEM ....................................16
Cross-Sectional View (2WD Models) .................. ....16
Cross-Sectional View (VQ35DE Models for AWD) ....17
Cross-Sectional View (VK45DE Models for AWD) ....18
Shift Mechanism .................................................. ....18
TCM Function ..........................................................29
CAN Communication ...............................................30
Input/Output Signal of TCM .....................................31
Line Pressure Control .............................................31
Shift Control ............................................................33
Lock-up Control .......................................................34
Engine Brake Control ..............................................35
Control Valve ...........................................................36
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......38
Introduction ......................................................... ....38
OBD-II Function for A/T System ..............................38
One or Two Trip Detection Logic of OBD-II ............38
OBD-II Diagnostic Trouble Code (DTC) .............. ....38
Malfunction Indicator Lamp (MIL) ............................40
TROUBLE DIAGNOSIS ....................................41
DTC Inspection Priority Chart ..................................41
Fail-Safe ..................................................................41
How to Perform Trouble Diagnosis for Quick and
Accurate Repair .......................................................
42
A/T Electrical Parts Location ...................................48
Circuit Diagram ........................................................49
Inspections Before Trouble Diagnosis .....................49
Road Test ................................................................53
Vehicle Speed at Which Gear Shifting Occurs ........58
Vehicle Speed at Which Lock-up Occurs/Releas-
es .............................................................................
58
Symptom Chart ........................................................59
TCM Input/Output Signal Reference Value .............83
CONSULT-III Function (TRANSMISSION) ..............84
Diagnosis Procedure without CONSULT-III ............91
DTC U1000 CAN COMMUNICATION LINE .....94
Description ........................................................... ....94
On Board Diagnosis Logic .......................................94
Possible Cause ........................................................94
DTC Confirmation Procedure ..................................94
Wiring Diagram - AT - CAN .....................................95
Diagnosis Procedure ...............................................96
DTC P0615 START SIGNAL CIRCUIT .............97
Description ...............................................................97
CONSULT-III Reference Value in Data Monitor
Mode ........................................................................
97
On Board Diagnosis Logic .......................................97
Possible Cause ........................................................97
DTC Confirmation Procedure ..................................97
Wiring Diagram - AT - STSIG ..................................98
Diagnosis Procedure ...............................................99
DTC P0700 TCM .............................................101
Description .............................................................101
On Board Diagnosis Logic .....................................101
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DTC P1710 A/T FLUID TEMPERATURE SEN-
SOR CIRCUIT .................................................
..
132
Description .......................................................... ..132
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
132
On Board Diagnosis Logic ....................................132
Possible Cause .....................................................132
DTC Confirmation Procedure ................................132
Wiring Diagram - AT - FTS ....................................133
Diagnosis Procedure .............................................133
Component Inspection ..........................................135
DTC P1721 VEHICLE SPEED SENSOR MTR ..137
Description .......................................................... ..137
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
137
On Board Diagnosis Logic ....................................137
Possible Cause .....................................................137
DTC Confirmation Procedure ................................137
Diagnosis Procedure .............................................137
DTC P1730 A/T INTERLOCK ..........................139
Description .......................................................... ..139
On Board Diagnosis Logic ....................................139
Possible Cause .....................................................139
DTC Confirmation Procedure ................................139
Judgement of A/T Interlock ...................................139
Diagnosis Procedure .............................................139
DTC P1731 A/T 1ST ENGINE BRAKING ........141
Description .......................................................... ..141
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
141
On Board Diagnosis Logic ....................................141
Possible Cause .....................................................141
DTC Confirmation Procedure ................................141
Diagnosis Procedure .............................................141
DTC P1752 INPUT CLUTCH SOLENOID
VALVE ..............................................................
143
Description .......................................................... ..143
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
143
On Board Diagnosis Logic ....................................143
Possible Cause .....................................................143
DTC Confirmation Procedure ................................143
Diagnosis Procedure .............................................143
DTC P1757 FRONT BRAKE SOLENOID
VALVE ..............................................................
145
Description .......................................................... ..145
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
145
On Board Diagnosis Logic ....................................145
Possible Cause .....................................................145
DTC Confirmation Procedure ................................145
Diagnosis Procedure .............................................145
DTC P1762 DIRECT CLUTCH SOLENOID
VALVE ..............................................................
147
Description ........................................................... ..147
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
147
On Board Diagnosis Logic .....................................147
Possible Cause ......................................................147
DTC Confirmation Procedure ................................147
Diagnosis Procedure .............................................147
DTC P1767 HIGH AND LOW REVERSE
CLUTCH SOLENOID VALVE .........................
149
Description .............................................................149
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
149
On Board Diagnosis Logic .....................................149
Possible Cause ......................................................149
DTC Confirmation Procedure ................................149
Diagnosis Procedure .............................................149
DTC P1772 LOW COAST BRAKE SOLENOID
VALVE .............................................................
151
Description .............................................................151
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
151
On Board Diagnosis Logic .....................................151
Possible Cause ......................................................151
DTC Confirmation Procedure ................................151
Diagnosis Procedure .............................................151
DTC P1774 LOW COAST BRAKE SOLENOID
VALVE FUNCTION .........................................
153
Description .............................................................153
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
153
On Board Diagnosis Logic .....................................153
Possible Cause ......................................................153
DTC Confirmation Procedure ................................153
Diagnosis Procedure .............................................153
DTC P1815 MANUAL MODE SWITCH ..........155
Description .............................................................155
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
155
On Board Diagnosis Logic .....................................155
Possible Cause ......................................................155
DTC Confirmation Procedure ................................155
Wiring Diagram - AT - MMSW ...............................156
Diagnosis Procedure .............................................158
Component Inspection ...........................................159
MAIN POWER SUPPLY AND GROUND CIR-
CUIT ................................................................
160
Wiring Diagram - AT - MAIN ..................................160
Diagnosis Procedure .............................................161
CLOSED THROTTLE POSITION AND WIDE
OPEN THROTTLE POSITION CIRCUIT .........
164
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
164
Diagnosis Procedure .............................................164
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AT-4
BRAKE SIGNAL CIRCUIT ..............................165
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
165
Diagnosis Procedure .............................................165
A/T INDICATOR CIRCUIT ...............................166
Description ........................................................... ..166
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
166
Diagnosis Procedure .............................................166
TROUBLE DIAGNOSIS FOR SYMPTOMS .....167
Wiring Diagram - AT - NONDTC .......................... ..167
A/T Check Indicator Lamp Does Not Come On .....170
Engine Cannot Be Started in "P" or "N" Position ...170
In "P" Position, Vehicle Moves When Pushed .......171
In "N" Position, Vehicle Moves ..............................172
Large Shock ("N" to "D" Position) ..........................173
Vehicle Does Not Creep Backward in "R" Position ..175
Vehicle Does Not Creep Forward in "D" Position ..178
Vehicle Cannot Be Started from D1 .......................180
A/T Does Not Shift: D1→ D2 ................................ ..182
A/T Does Not Shift: D2→ D3 ................................ ..184
A/T Does Not Shift: D3→ D4 ................................ ..186
A/T Does Not Shift: D4→ D5 ................................ ..188
A/T Does Not Lock-up ......................................... ..190
A/T Does Not Hold Lock-up Condition ...................192
Lock-up Is Not Released .......................................194
Engine Speed Does Not Return to Idle .................194
Cannot Be Changed to Manual Mode ...................195
A/T Does Not Shift: 5th Gear → 4th Gear ........... ..196
A/T Does Not Shift: 4th Gear → 3rd Gear ........... ..197
A/T Does Not Shift: 3rd Gear → 2nd Gear .......... ..199
A/T Does Not Shift: 2nd Gear → 1st Gear ........... ..201
Vehicle Does Not Decelerate by Engine Brake ... ..202
SHIFT CONTROL SYSTEM ............................205
Control Device Removal and Installation ............. ..205
Control Rod Removal and Installation ...................206
Adjustment of A/T Position ....................................207
Checking of A/T Position .......................................207
A/T SHIFT LOCK SYSTEM .............................208
Description ........................................................... ..208
Shift Lock System Electrical Parts Location ..........208
Wiring Diagram - AT - SHIFT .................................209
Diagnosis Procedure .............................................209
KEY INTERLOCK CABLE ...............................212
Component .......................................................... ..212
Removal and Installation .......................................212
ON-VEHICLE SERVICE ...................................215
Control Valve with TCM and A/T Fluid Tempera-
ture Sensor 2 ....................................................... .
215
Parking Component (2WD Models Only) ..............226
Rear Oil Seal .........................................................233
Revolution Sensor Component (2WD Models
Only) .....................................................................
233
AIR BREATHER HOSE ....................................239
Removal and Installation ...................................... .239
TRANSMISSION ASSEMBLY ..........................241
Removal and Installation (2WD Models) .............. .241
Removal and Installation (AWD Models) ..............243
OVERHAUL ......................................................249
Component .......................................................... .249
Oil Channel ...........................................................261
Location of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ......................... .
264
DISASSEMBLY .............................................. ..267
Disassembly ......................................................... .267
REPAIR FOR COMPONENT PARTS ..............285
Oil Pump .............................................................. .285
Front Sun Gear, 3rd One-Way Clutch ...................287
Front Carrier, Input Clutch, Rear Internal Gear .....289
Mid Sun Gear, Rear Sun Gear, High and Low Re-
verse Clutch Hub ..................................................
295
High and Low Reverse Clutch ..............................301
Direct Clutch .........................................................303
ASSEMBLY .................................................... ..306
Assembly (1) ........................................................ .306
Adjustment ............................................................320
Assembly (2) .........................................................323
SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................
330
General Specification ........................................... .330
Vehicle Speed at Which Gear Shifting Occurs .....330
Vehicle Speed at Which Lock-up Occurs/Releas-
es ..........................................................................
331
Stall Speed ............................................................331
Line Pressure ........................................................331
A/T Fluid Temperature Sensor ..............................332
Turbine Revolution Sensor ...................................332
Vehicle Speed Sensor A/T (Revolution Sensor) ...332
Reverse Brake ......................................................332
Total End Play .......................................................332
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A/T FLUIDAT-11
< SERVICE INFORMATION >
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A/T FLUID
Changing A/T FluidINFOID:0000000001327128
1. Warm up ATF.
2. Stop engine.
3. Loosen the level gauge bolt.
4. Drain ATF from drain plug and refill with new ATF. Always refill same volume with drained ATF.
 To replace the ATF, pour in new ATF at the A/T fluid chargingpipe with the engine idling, at the same time drain the old ATF
from the radiator cooler hose return side.
 When the color of the ATF coming out is almost same as the
color of the new ATF, the replacement is complete. The
amount of new ATF to use should be 30 to 50% increase of
the stipulated amount.
CAUTION:
 Use only Genuine NISSAN Matic J ATF. Do not mix with other ATF.
 Using ATF other than Genuine NISSAN Matic J AT F will cause deterioration in driveability and A/
T durability, and may damage the A/T, which is not covered by the warranty.
 When filling ATF, take care not to scatter heat generating parts such as exhaust.
 Do not reuse drain plug gasket.
5. Run engine at idle speed for 5 minutes.
6. Check A/T fluid level and condition. Refer to AT- 11 , "
Checking A/T Fluid". If ATF is still dirty, repeat step 2.
through 5.
7. Install the removed A/T fluid level gauge into A/T fluid charging pipe.
8. Tighten the level gauge bolt.
Checking A/T FluidINFOID:0000000001327129
1. Warm up engine.
2. Check for A/T fluid leakage.
3. Loosen the level gauge bolt.
4. Before driving, A/T fluid level can be checked at A/T fluid tem- peratures of 30 to 50 °C (86 to 122 °F) using “COLD” range on A/
T fluid level gauge as follows.
a. Park vehicle on level surface and set parking brake.
b. Start engine and move selector lever through each gear posi- tion. Leave selector lever in “P” position.
c. Check A/T fluid level with engine idling.
d. Remove A/T fluid level gauge and wipe clean with lint-free paper.
CAUTION:ATF: Genuine NISSAN Matic J ATF
Fluid capacity: 10.3 (10-7/8 US qt, 9-1/8 lmp qt)
Drain plug:
: 34 N·m (3.5 kg-m, 25 ft-lb)
Level gauge bolt: : 5.1 N·m (0.52 kg-m, 45 in-lb)
SCIA4896E
SCIA7120E
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A/T CONTROL SYSTEMAT-29
< SERVICE INFORMATION >
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TCM FunctionINFOID:0000000001327135
The function of the TCM is to:
 Receive input signals sent from various switches and sensors.
 Determine required line pressure, shifting point, lock-up operation, and engine brake operation.
 Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transmission senses vehicle operating condi tions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
SCIA1519E
SENSORS (or SIGNALS)
⇒TCM
⇒ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed signal
Manual mode switch signal
Stop lamp switch signal
Turbine revolution sensor
ATF pressure switch Shift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-III co
mmunication
line
Duet-EA control
CAN system Input clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch sole-
noid valve
Low coast brake solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
A/T CHECK indicator lamp
Starter relay
Back-up lamp relay
:

A/T CONTROL SYSTEMAT-31
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
Input/Output Signal of TCMINFOID:0000000001327137
*1: Spare for vehicle speed sensor·A/T (revolution sensor)
*2: Spare for accelerator pedal position signal
*3: If these input and output signals are different, the TCM triggers the fail-safe function.
*4: Used as a condition for starting self-diagnostics; if self-diagnostics are not started, it is judged that there is some kin d of error.
*5: Input by CAN communications
*6: Output by CAN communications
Line Pressure ControlINFOID:0000000001327138
 When an input torque signal equivalent to the engine drive force is sent from the ECM to the TCM, the TCM
controls the line pressure solenoid.
Control item Line
pressure control Vehicle
speed
control Shift
control Lock-up
control Engine
brake
control Fail-safe
function (*3) Self-diag-
nostics
function
Input Accelerator pedal position signal
(*5)XXXXXXX
Vehicle speed sensor A/T
(revolution sensor) XXXXXXX
Vehicle speed sensor MTR
(*1) (*5)X
Closed throttle position signal
(*5)X (*2) X X X X (*4)
Wide open throttle position signal
(*5)XX (*4)
Turbine revolution sensor 1 X X X X X
Turbine revolution sensor 2
(for 4th speed only) XXXXX
Engine speed signals
(*5)XXXXXXX
Stop lamp switch signal
(*5)XXX X (*4)
A/T fluid temperature sensors 1, 2 X X X X X X
ASCD or
ICC Operation signal
(*5)XXX
Overdrive cancel sig-
nal
(*5)X
Out-
put Direct clutch solenoid X X X X
Input clutch solenoid X X X X
High and low reverse clutch sole-
noid
XX XX
Front brake solenoid X X X X
Low coast brake solenoid (ATF
pressure switch 2) XX XXX
Line pressure solenoid X X X X X X X
TCC solenoid X X X
Self-diagnostics table
(*6)X
Starter relay XX
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

A/T CONTROL SYSTEMAT-33
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
The necessary and adequate line pressure for shift change is set.
For this reason, line pressure pattern setting corresponds to input
torque and gearshift selection. Also, line pressure characteristic is
set according to engine speed, during engine brake operation.
At Low Fluid Temperature
When the A/T fluid temperature drops below the prescribed tempera-
ture, in order to speed up the action of each friction element, the line
pressure is set higher than the normal line pressure characteristic.
Shift ControlINFOID:0000000001327139
The clutch pressure control solenoid is controlled by the signals from the switches and sensors. Thus, the
clutch pressure is adjusted to be appropriate to t he engine load state and vehicle driving state. It becomes
possible to finely control the clutch hydraulic pressu re with high precision and a smoother shift change charac-
teristic is attained.
SHIFT CHANGE
The clutch is controlled with the optimum timing and oil pressure by the engine speed, engine torque informa-
tion, etc.
Shift Change System Diagram
PCIA0010E
PCIA0011E
PCIA0012E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C